Quote:
Originally Posted by ken0042
I thought there was some sort of motor to move the panels; ie change them for winter when the sun is coming in at a different angle than in the summer.
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Oh, yes indeed...if you choose to install them. They're not required though, it just means you don't track the sun and don't get peak insolation on your panels. Most rooftop systems don't track the sun, at least in California where the elevation of the sun doesn't vary as much over the year. It just means that you have to buy more panels.
Up here though, ya, it's probably best to save on panels up front, buy a tracker system, and handle the maintenance down the road.